package com.leo.web;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * Created by leo on 2015/11/2.
 */
public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response, Object o) throws Exception {
        HttpSession session = request.getSession();
        Object user = session.getAttribute("_admin_login_");

        if(user == null) {
            response.sendRedirect(request.getContextPath() + "/login");
            return true;
        }
            else
            return true;


    }

    @Override
    public void postHandle(HttpServletRequest request,
                           HttpServletResponse response, Object o, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object o, Exception e) throws Exception {

    }
}